/*
* Copyright 2007-2010 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
* in compliance with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software distributed under the License
* is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
* or implied. See the License for the specific language governing permissions and limitations under
* the License.
*/
package org.impalaframework.spring.module.loader;
import java.util.ArrayList;
import java.util.Collection;
import org.impalaframework.module.ModuleDefinition;
import org.impalaframework.module.loader.ModuleUtils;
import org.impalaframework.module.resource.ModuleLocationsResourceLoader;
import org.impalaframework.module.spi.Application;
import org.impalaframework.spring.module.SpringModuleLoader;
import org.impalaframework.spring.resource.ClassPathResourceLoader;
import org.impalaframework.spring.resource.CompositeResourceLoader;
import org.impalaframework.spring.resource.ResourceLoader;
import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
import org.springframework.beans.factory.support.DefaultListableBeanFactory;
import org.springframework.beans.factory.xml.XmlBeanDefinitionReader;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.context.support.GenericApplicationContext;
import org.springframework.core.io.Resource;
import org.springframework.util.Assert;
/**
* Base implementation of {@link SpringModuleLoader} which provides implementations for methods defined in {@link SpringModuleLoader}.
*
* @author Phil Zoio
*/
public abstract class BaseSpringModuleLoader implements SpringModuleLoader {
private Collection<ResourceLoader> springLocationResourceLoaders;
public GenericApplicationContext newApplicationContext(Application application, ApplicationContext parent, ModuleDefinition definition, ClassLoader classLoader) {
Assert.notNull(classLoader, "classloader cannot be null");
DefaultListableBeanFactory beanFactory = new DefaultListableBeanFactory();
beanFactory.setBeanClassLoader(classLoader);
// create the application context, and set the class loader
GenericApplicationContext context = new GenericApplicationContext(beanFactory, parent);
context.setClassLoader(classLoader);
context.setDisplayName(ModuleLoaderUtils.getDisplayName(definition, context));
return context;
}
public final Resource[] getSpringConfigResources(String applicationId, ModuleDefinition moduleDefinition, ClassLoader classLoader) {
ModuleLocationsResourceLoader loader = new ModuleLocationsResourceLoader();
Collection<ResourceLoader> resourceLoaders = getSpringLocationResourceLoaders();
ResourceLoader compositeResourceLoader = new CompositeResourceLoader(resourceLoaders);
loader.setResourceLoader(compositeResourceLoader);
return loader.getSpringLocations(moduleDefinition, classLoader);
}
protected Collection<ResourceLoader> getSpringLocationResourceLoaders() {
Collection<ResourceLoader> injectedLocationResourceLoaders = getInjectedSpringLocationResourceLoaders();
if (injectedLocationResourceLoaders != null) {
return injectedLocationResourceLoaders;
}
Collection<ResourceLoader> resourceLoaders = new ArrayList<ResourceLoader>();
resourceLoaders.add(new ClassPathResourceLoader());
return resourceLoaders;
}
public XmlBeanDefinitionReader newBeanDefinitionReader(String applicationId, ConfigurableApplicationContext context, ModuleDefinition definition) {
final ConfigurableListableBeanFactory beanFactory = context.getBeanFactory();
return new XmlBeanDefinitionReader(ModuleUtils.castToBeanDefinitionRegistry(beanFactory));
}
public void afterRefresh(String applicationId, ConfigurableApplicationContext context, ModuleDefinition definition) {
}
public void handleRefresh(String applicationId, ConfigurableApplicationContext context, ModuleDefinition moduleDefinition) {
// refresh the application context - now we're ready to go
context.refresh();
}
/**
* Nothing to do in this implementation
*/
public void beforeClose(String applicationId, ApplicationContext applicationContext, ModuleDefinition moduleDefinition) {
}
protected Collection<ResourceLoader> getInjectedSpringLocationResourceLoaders() {
return this.springLocationResourceLoaders;
}
public void setSpringLocationResourceLoaders(Collection<ResourceLoader> resourceLoaders) {
this.springLocationResourceLoaders = resourceLoaders;
}
}